Solid State Energy Conversion for Deep Space Power

Metadata Updated: February 28, 2019

Thermophotovoltaic (TPV) devices employed in static radioisotope generators show great promise for highly efficient, reliable, and resilient power generation for deep space missions. Long-wavelength TPVs would require lower-temperature heat sources, leading to reduced thermal stress on equipment and a better harvesting of the thermal source spectrum. However, these devices demand new materials with smaller bandgaps, materials that cannot be grown due to miscibility gaps or have yet to be grown without debilitating crystalline defects. To increase the potential for TPV technologies, my research focuses on the epitaxial growth of III-V semiconducting compounds composed of bismuth for long-wavelength TPV applications, allowing for a greater ubiquity to heat harvesting and power generation systems. I will use both analytical and empirical tools to enable the success of my endeavor: modeling both global and local strain using Silvaco TCAD to understand the physics of the growth process, as well as fabricating samples by molecular beam epitaxy to compare theory with experiment. Ultimately, I will build and test a full TPV generator implemented with a graphite heat source to analyze our devices' potential efficiency in static radioisotope power sources. Long-wavelength, low-temperature TPVs hold the power to revolutionize electricity generation in a wide variety of fields by providing a clean, long-lasting, and efficient method of producing power.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Dates

Metadata Created Date August 1, 2018
Metadata Updated Date February 28, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date February 28, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_91584
Maintainer
TECHPORT SUPPORT
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id bbb74fd1-8801-4ed3-b488-44032b54654b
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2018-01-01
Homepage URL https://techport.nasa.gov/view/91584
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 6a2d6c7f500c911ea614c96bbaeb6bbf83655c93
Source Schema Version 1.1

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